Aouidi F. auteur aut IRD Ayari S. auteur aut IRD Ferhi H. auteur aut IRD Roussos Sevastianos auteur aut IRD Hamdi M. auteur aut IRD text journalArticle eng text/pdf born digital access Olive leaves are commercialized for their antioxidative value due to their valuable phenolic compounds. The present study aimed to evaluate the effect of gamma irradiation on microbial load, on antioxidative properties and on phenolic compounds of air-dried olive leaves. Irradiation was applied up to 25 kGy (5 kGy intervals) to powdered and intact samples. Total aerobic bacteria, yeast and mold, and lactic acid bacteria were counted after gamma irradiation. Decontamination was obtained at 20 kGy. The radioresistance of microbial population was high with D-10 values between 9.74 and 25.12 kGy. Besides, gamma irradiation up to 25 kGy was found to maintain the antioxidant capacity, molecular mass distribution of polyphenolics, total phenolics, ortho-diphenols, flavonoids, oleuropein, verbascoside and rutin contents. To conclude, the improvement of the microbial quality of air-dried olive leaves, without affecting phenolic composition and antioxidative properties, can be successively achieved by the application of gamma irradiation treatment. specialized Olive leaf Gamma irradiation D-10-value Phenolic compound Antioxidant capacity 076 054 084 127 3 1105-1113 2011 0308-8146 https://www.documentation.ird.fr/hor/fdi:010053462 10.1016/j.foodchem.2011.01.109 0308-8146 [F B010053462] https://www.documentation.ird.fr/hor/fdi:010053462 https://www.documentation.ird.fr/intranet/publi/2011/04/010053462.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2011-05-02 2017-08-23 fdi:010053462 fre